CN101985096A - Self-cleaning polymerization reactor - Google Patents
Self-cleaning polymerization reactor Download PDFInfo
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- CN101985096A CN101985096A CN 201010248478 CN201010248478A CN101985096A CN 101985096 A CN101985096 A CN 101985096A CN 201010248478 CN201010248478 CN 201010248478 CN 201010248478 A CN201010248478 A CN 201010248478A CN 101985096 A CN101985096 A CN 101985096A
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Abstract
The invention relates to a self-cleaning polymerization reactor, which comprises a hermetic horizontal cylinder, wherein the cross section of the horizontal cylinder has a double circle shape; two main shafts are arranged in the cylinder, and are positioned in two centers of the double circles respectively; the main shafts are provided with a plurality of star rotors; each star rotor consists of a disc body and a hub in the center of the disc body; the disc body is provided with a plurality of spokes; the hub is sleeved on the main shaft; dynamic input ends of the two main shafts extend out of the horizontal cylinder, and are respectively connected with a drive device which is used for driving the two main shafts to rotate synchronously and reversely; the number of the spokes on the rotor is preferably 3; and the spokes are provided with a straight scraper or a scraper with a helical angle. When the reactor works, the spokes on the star rotors stir materials, and can continuously destroy and scrape remaining layers attached to the inner wall of the cylinder and the surfaces of the main shafts. The self-cleaning polymerization reactor is mainly used for the polymerization reaction of polylactic acid (PLA) and other polyesters.
Description
Technical field
The present invention relates to a kind of automatically cleaning polymer reactor, be mainly used in the polymerisation of PLA (PLA) and other kinds kind polyester.
Background technology
The material acid of PLA (LA) comes from crops or non-grain crop, two-step method at PLA prepares in the technology, lactic acid elder generation synthesis of lactide, obtain the PLA of HMW again by the lactide ring-opening polymerisation, the PLA that forms is degradable fiber or plastics, belong to the 4th generation new material, at present some developed countries of the world have carried out corresponding product development, but have only realized industrial production in the U.S..Because the PLA raw material is renewable, the product degradable can partly substitute petroleum-based plastics and fiber, and popularizing application prospect is very long-range, has strategic importance.
The PLA polymer reactor is the synthetic key equipment of PLA, and from structure, external existing reactor has the branch of single shaft and twin shaft, sees it mainly is radially complete mixed axial horizontal sliding from flow pattern, and the rabbling mechanism of reactor has disc type, spectacle, double-screw type or the like.When the degree of polymerization hour, viscosity is low, material fluidity is good, mix easily, adopting single shaft disc type reactor to stir just is enough to satisfy technological requirement, but along with the degree of polymerization increases, viscosity increases, mobile variation, the retention layer thickening of the attached wall of material also has polymer buildup on the main shaft surface simultaneously, and time one length will produce degraded, will influence the quality of product after coming off, existing polymer reactor does not all address these problems well.
Summary of the invention
For overcoming the above-mentioned defective of prior art, the invention provides a kind of automatically cleaning polymer reactor, this polymer reactor in the normal course of work, can automated cleaning at cylinder inboard wall and the lip-deep retention layer of main shaft.
The present invention realizes that the technical scheme of above-mentioned purpose is: a kind of automatically cleaning polymer reactor, the horizontal cylinder that comprises sealing, the shape of cross section of described horizontal cylinder is Double Circle, be provided with two main shafts in the cylindrical shell, described two main shafts lay respectively at two circle centre positions of described Double Circle, described main shaft is provided with some star rotors, described star rotor is made up of disk body and the wheel hub that is arranged on disk body central authorities, described disk body is provided with a plurality of spokes, described wheel hub is socketed on the described main shaft, the power intake of described two main shafts all extends in outside the described horizontal cylinder, and connection is used to drive the synchronous and counter-rotational drive unit of two main shafts respectively.
The invention has the beneficial effects as follows: because the cylindrical shell cross section is Double Circle, and two circle centre positions at two circles all are provided with corresponding main shaft, simultaneously also owing to be provided with star rotor on the main shaft, by the spoke length on the control star rotor, make its front end approach the surface of cylinder inboard wall and another main shaft, thus in the main axis rotation process, spoke on the star rotor not only plays stirring action to material, guarantee the mixed effect in the polymerization process, but also can constantly destroy and strike off retention layer attached to cylinder inboard wall and main shaft surface, make material be difficult on cylinder inboard wall and main shaft surface, adhere to for a long time, played the effect that weakens and eliminate retention layer thus, avoided descending because of retention layer breaks away from the product quality that causes.
Description of drawings
Fig. 1 is the sectional structure schematic diagram that the present invention overlooks direction;
Fig. 2 is the sectional structure schematic diagram of side-looking direction of the present invention;
Fig. 3 is the schematic diagram that the present invention relates to discharging end cap, discharge end axle envelope and the terminal interconnected relationship of main shaft;
Fig. 4 is the schematic diagram that the present invention relates to charging end cap, feed end axle envelope and main shaft power input interconnected relationship;
Fig. 5 is the schematic diagram that the present invention relates to horizontal cylinder and chuck shell cross sectional shape;
Fig. 6 is the structural representation that the present invention relates to helical flow path.
The specific embodiment
Referring to Fig. 1, the invention provides a kind of automatically cleaning polymer reactor, the horizontal cylinder 10 that comprises sealing, the shape of cross section of described horizontal cylinder is Double Circle, be provided with two main shafts 20 in the cylindrical shell, described two main shafts lay respectively at two circle centre positions of described Double Circle, described main shaft is provided with some star rotors 30, described star rotor is made up of disk body 332 and the wheel hub 31 that is arranged on disk body central authorities, described disk body is provided with a plurality of spokes 33, described wheel hub is socketed on the described main shaft, and the power intake 21 of described two main shafts all extends in outside the described horizontal cylinder, and connection is used to drive the synchronous and counter-rotational drive unit 50 of two main shafts respectively.The alleged Double Circle of the present invention is meant by two circles and intersects mutually after (two circle part areas overlapping) that by the closed figure that circular arc is formed that exposes of two circles, two centers of circle of alleged Double Circle are meant the center of circle of two cross one another circles of this Double Circle of formation.
The quantity of described epitrochanterian spoke is preferably 3, and adjacent rotor is that 180 ° mode is interspersed with the phase angle difference preferably on the same main shaft, to strengthen mixing effect.
Usually, rotor axial arrangement mode on adjacent two main shafts can be identical with arrangement position, on same axial location, the spoke of the rotor on main shaft is corresponding with the spoke gap of rotor on another main shaft just, can optimize material flow thus, and destroy and strike off the material that adheres on main shaft surface and the barrel effectively.The spoke of the rotor on the alleged main shaft is just corresponding with the spoke gap of rotor on another main shaft, be meant when a spoke level of the rotor of a main shaft is pointed to another main shaft, be positioned at the centre of two spokes of the respective rotor of another main shaft just.
According to the restriction of manufacturing process and service condition, the front end of described spoke usually should near or as far as possible near the surface of inwall and another main shaft of horizontal cylinder, to destroy and to strike off retention layer effectively.By the structure of horizontal cylinder rationally is set, the outside of a main shaft is positioned at just or is located substantially on another circle, make that thus the spoke front end on the main shaft is identical or basic identical with distance apart from another main shaft surface apart from the distance of the cylinder inboard wall of its place circle.
The edge of adjacent spoke preferably connects into a level and smooth arc on the same rotor, both has been convenient to processing thus, helps improving intensity again, also helps the optimization material flow.
Can be provided with scraper on the described spoke, described scraper can be for straight scraper or for being with the scraper of helical angle, the pitch angle alpha will of the scraper of described band helical angle is preferably about 5 °, for example 4 °, 5 °, 6 ° etc., can promote the axial flow that material is done suitable degree thus, realization logistics axially nothing is returned.
Usually, the top charging aperture 16 of the nearly feed end of described cylindrical shell, the bottom of the nearly port of export is provided with discharging opening 15, to realize input and output material.
Can make the spacing difference between the adjacent star rotor on the diverse location of described main shaft, spacing between the adjacent star rotor on the feed end direction usually can be less than the spacing between the adjacent star rotor on the discharge end direction, viscosity with suitable adaptive response material realizes good stirring and promotion.
Described horizontal cylinder is outer can be provided with heating jacket, can be provided with helical flow path 41 in the described heating jacket, so that modes such as employing liquid phase heating agent heat and are incubated.
The inwall of described heating jacket is described horizontal cylinder, outer wall is the chuck shell 40 that is positioned at described horizontal cylinder outside, and described helical flow path can be split to form in heating jacket by the helical form runner dividing plate 42 that is welded between described horizontal cylinder and the described chuck shell.
The two ends of described main shaft can be solid shafting, and the middle part is a hollow shaft, to save material usage, weight reduction in proof strength and rigidity.
Described drive unit can be provided with two output speed is identical but output shaft that rotation direction is opposite, and the described two main shafts shaft coupling by separately respectively connect with each self-corresponding output shaft, realize the connection of described main shaft with described drive unit thus.
Described horizontal cylinder can comprise the cylindrical shell main body of tubular, the feed end of described cylindrical shell main body and discharge end are connected with charging end cap 13 and discharging end cap 11 respectively, the power intake of described main shaft is installed in described discharge end by discharge end axle envelope 12 and covers, the end of described main shaft is installed in described feed end by terminal shaft envelope 14 and covers, and realizes the installation and the sealing of main shaft thus.
The axle sleeve 14.1 that described feed end axle is sealed up can be enclosed within on the end of described main shaft to allow the terminal fit system that slides relatively of described main shaft, to solve the displacement problem that causes because of temperature rise and different materials linear expansion coefficient.
The axle sleeve 12.1 of described discharge end axle envelope is enclosed within on the power intake of described main shaft, its outside can be provided with the O type ring 12.4 that is used to seal, described O type ring set is on the power intake of described main shaft, and by on the axle sleeve that is fastened on described discharge end axle envelope along the equally distributed a plurality of trip bolts 12.5 of circumference.The power intake of described main shaft can also be connected with locking nut 12.3 and stop nut 12.2, described clamp nut is pressed on the outside of described O type ring, described stop nut is pressed on the outside of described clamp nut, the locking nut that spins on the different main is opposite with the rotation direction of stop nut, to guarantee the reliability of sealing in the normal operation.
Claims (10)
1. automatically cleaning polymer reactor, the horizontal cylinder that comprises sealing, the shape of cross section that it is characterized in that described horizontal cylinder is Double Circle, be provided with two main shafts in the cylindrical shell, described two main shafts lay respectively at two circle centre positions of described Double Circle, described main shaft is provided with some star rotors, described star rotor is made up of disk body and the wheel hub that is arranged on disk body central authorities, described disk body is provided with a plurality of spokes, described wheel hub is socketed on the described main shaft, the power intake of described two main shafts all extends in outside the described horizontal cylinder, and connection is used to drive the synchronous and counter-rotational drive unit of two main shafts respectively.
2. automatically cleaning polymer reactor as claimed in claim 1, the quantity that it is characterized in that described epitrochanterian spoke is 3, adjacent rotor is that 180 ° mode is interspersed with the phase angle difference on the same main shaft, rotor axial arrangement mode on adjacent two main shafts is identical with arrangement position, on same axial location, the spoke of the rotor on main shaft is corresponding with the spoke gap of rotor on another main shaft just.
3. automatically cleaning polymer reactor as claimed in claim 2 is characterized in that the edge of adjacent spoke on the same rotor connects into a level and smooth arc, and described spoke is provided with scraper, and described scraper is straight scraper or is the scraper of band helical angle.
4. automatically cleaning polymer reactor as claimed in claim 3, the top charging aperture that it is characterized in that the nearly feed end of described cylindrical shell, the bottom of the nearly port of export is provided with discharging opening, spacing difference between the adjacent star rotor on the diverse location of described main shaft, spacing between the adjacent star rotor on the feed end direction is less than the spacing between the adjacent star rotor on the discharge end direction, with the viscosity variation of adaptive response material.
5. as claim 1,2,3 or 4 described automatically cleaning polymer reactors, it is characterized in that described horizontal cylinder is provided with heating jacket outward, is provided with helical flow path in the described heating jacket.
6. automatically cleaning polymer reactor as claimed in claim 5, the inwall that it is characterized in that described heating jacket is described horizontal cylinder, outer wall is the chuck shell that is positioned at described horizontal cylinder outside, and described helical flow path is split to form in heating jacket by the helical form runner dividing plate that is welded between described horizontal cylinder and the described chuck shell.
7. as claim 1,2,3 or 4 described automatically cleaning polymer reactors, the two ends that it is characterized in that described main shaft are solid shafting, the middle part is a hollow shaft, described drive unit is provided with two output speed is identical but output shaft that rotation direction is opposite, the shaft coupling that described two main shafts pass through separately respectively connects with each self-corresponding output shaft, realizes the connection of described main shaft with described drive unit thus.
8. as claim 1,2,3 or 4 described automatically cleaning polymer reactors, it is characterized in that described horizontal cylinder comprises the cylindrical shell main body of tubular, the feed end of described cylindrical shell main body and discharge end are connected with charging end cap and discharging end cap respectively, the power intake of described main shaft is installed in described discharge end by discharge end axle envelope and covers, and the end of described main shaft is installed in described feed end by the terminal shaft envelope and covers.
9. automatically cleaning polymer reactor as claimed in claim 8 is characterized in that the axle sleeve that described discharge end axle is sealed up is enclosed within on the end of described main shaft to allow the terminal fit system that slides relatively of described main shaft.
10. automatically cleaning polymer reactor as claimed in claim 9, the axle sleeve that it is characterized in that described feed end axle envelope is enclosed within on the power intake of described main shaft, its outside is provided with the O type ring that is used to seal, described O type ring set is on the power intake of described main shaft, and by on the axle sleeve that is fastened on described discharge end axle envelope along the equally distributed a plurality of trip bolts of circumference, the power intake of described main shaft also is connected with locking nut and stop nut, described clamp nut is pressed on the outside of described O type ring, described stop nut is pressed on the outside of described clamp nut, and the locking nut that spins on the different main is opposite with the rotation direction of stop nut.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201010248478 CN101985096B (en) | 2010-05-13 | 2010-08-09 | Self-cleaning polymerization reactor |
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201010171114.4 | 2010-05-13 | ||
| CN201010171114 | 2010-05-13 | ||
| CN 201010248478 CN101985096B (en) | 2010-05-13 | 2010-08-09 | Self-cleaning polymerization reactor |
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| CN101985096A true CN101985096A (en) | 2011-03-16 |
| CN101985096B CN101985096B (en) | 2012-07-11 |
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Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102698695A (en) * | 2012-06-07 | 2012-10-03 | 天津大学 | Horizontal double-shaft stirring reaction kettle with star-shaped stirrer |
| CN102924703A (en) * | 2012-09-04 | 2013-02-13 | 上海聚友化工有限公司 | Double-shaftless high-viscosity polyester continuous production device |
| CN103406087A (en) * | 2013-08-27 | 2013-11-27 | 北京化工大学 | Energy-saving and high-efficiency self-cleaning polymerization process and device |
| CN105085755A (en) * | 2014-04-22 | 2015-11-25 | 中国石油化工股份有限公司 | Polyisoprene preparation method |
| CN105170064A (en) * | 2015-09-17 | 2015-12-23 | 河南天仁生物材料研究所有限公司 | High-viscosity polymerization plant and method for producing polylactic acid by using same |
| CN107051355A (en) * | 2017-03-30 | 2017-08-18 | 山东里德工程技术有限公司 | A kind of single shaft self-cleaning reactor |
| CN107051357A (en) * | 2017-04-10 | 2017-08-18 | 山东里德工程技术有限公司 | Twin shaft self-cleaning reactor |
| CN108236910A (en) * | 2018-01-31 | 2018-07-03 | 浙江大学 | A kind of agitating device and a kind of horizontal-type biaxial self-cleaning reactor |
| CN110936508A (en) * | 2019-05-28 | 2020-03-31 | 龙阿秀 | TPU plastic particle modification and blending preparation system |
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| CN1562458A (en) * | 2004-03-31 | 2005-01-12 | 青岛科技大学化工设备设计研究所 | Homodromous stirred reactor in high shearing force |
| CN201105221Y (en) * | 2007-08-24 | 2008-08-27 | 宜宾天原集团股份有限公司 | Self-cleaning type reactor for producing formic acid |
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| CN101612546A (en) * | 2009-05-27 | 2009-12-30 | 中国纺织工业设计院 | High-efficiency multi-section type final polycondensation reactor |
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2010
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Patent Citations (5)
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| CN1562458A (en) * | 2004-03-31 | 2005-01-12 | 青岛科技大学化工设备设计研究所 | Homodromous stirred reactor in high shearing force |
| CN201105221Y (en) * | 2007-08-24 | 2008-08-27 | 宜宾天原集团股份有限公司 | Self-cleaning type reactor for producing formic acid |
| CN201308834Y (en) * | 2008-11-05 | 2009-09-16 | 无锡力马化工机械有限公司 | Horizontal etherification kettle |
| CN101612546A (en) * | 2009-05-27 | 2009-12-30 | 中国纺织工业设计院 | High-efficiency multi-section type final polycondensation reactor |
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Cited By (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102698695A (en) * | 2012-06-07 | 2012-10-03 | 天津大学 | Horizontal double-shaft stirring reaction kettle with star-shaped stirrer |
| CN102924703A (en) * | 2012-09-04 | 2013-02-13 | 上海聚友化工有限公司 | Double-shaftless high-viscosity polyester continuous production device |
| CN102924703B (en) * | 2012-09-04 | 2014-05-14 | 上海聚友化工有限公司 | Double-shaftless high-viscosity polyester continuous production device |
| CN103406087A (en) * | 2013-08-27 | 2013-11-27 | 北京化工大学 | Energy-saving and high-efficiency self-cleaning polymerization process and device |
| WO2015027613A1 (en) * | 2013-08-27 | 2015-03-05 | 北京化工大学 | Self-cleaning polymerization apparatus and process |
| CN105085755A (en) * | 2014-04-22 | 2015-11-25 | 中国石油化工股份有限公司 | Polyisoprene preparation method |
| CN105085755B (en) * | 2014-04-22 | 2018-03-02 | 中国石油化工股份有限公司 | A kind of method for preparing polyisoprene |
| CN105170064A (en) * | 2015-09-17 | 2015-12-23 | 河南天仁生物材料研究所有限公司 | High-viscosity polymerization plant and method for producing polylactic acid by using same |
| CN107051355A (en) * | 2017-03-30 | 2017-08-18 | 山东里德工程技术有限公司 | A kind of single shaft self-cleaning reactor |
| CN107051357A (en) * | 2017-04-10 | 2017-08-18 | 山东里德工程技术有限公司 | Twin shaft self-cleaning reactor |
| CN108236910A (en) * | 2018-01-31 | 2018-07-03 | 浙江大学 | A kind of agitating device and a kind of horizontal-type biaxial self-cleaning reactor |
| CN110936508A (en) * | 2019-05-28 | 2020-03-31 | 龙阿秀 | TPU plastic particle modification and blending preparation system |
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| CN101985096B (en) | 2012-07-11 |
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Effective date of registration: 20170207 Address after: 100007 Beijing, Dongzhimen, North Street, No. 9, No. Patentee after: China National Petroleum Corporation Patentee after: China Kunlun Engineering Co., Ltd. Address before: 100007 Beijing, Dongzhimen, North Street, No. 9, No. Patentee before: China National Petroleum Corporation Patentee before: China Textile Industrial Engineering Institute |